| (19) |
 |
|
(11) |
EP 0 255 236 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
09.05.1990 Bulletin 1990/19 |
| (43) |
Date of publication A2: |
|
03.02.1988 Bulletin 1988/05 |
| (22) |
Date of filing: 29.06.1987 |
|
| (51) |
International Patent Classification (IPC)4: C09K 19/20, C09K 19/12, C09K 19/28, C09K 19/34, C09K 19/32, C09K 19/22, C09K 19/40, C07D 213/80, C07D 237/14, C07D 239/54, C07D 239/26 |
|
| (84) |
Designated Contracting States: |
|
CH DE FR GB IT LI SE |
| (30) |
Priority: |
30.06.1986 US 879988
|
| (71) |
Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY |
|
St. Paul,
Minnesota 55133-3427 (US) |
|
| (72) |
Inventor: |
|
- Janulis, Eugene P.
c/o Minnesota Mining and
P.O. Box 33427
St. Paul
Minnesota 55133 (US)
|
| (74) |
Representative: Baillie, Iain Cameron et al |
|
c/o Ladas & Parry
Altheimer Eck 2
80331 München
80331 München (DE) |
|
| |
|
| (54) |
Fluorine-containing chiral smectic liquid crystals |
(57) Compounds are provided which comprise a fluorocarbon terminal portion and a chiral
hydrocarbon terminal portion, said terminal portions being connected by a central
core, said compounds having tilted smectic mesophases or having latent tilted smectic
mesophases which develop when said compounds having said latent mesophases are in
admixture with said compounds having tilted smectic mesophases or said compounds having
latent tilted smectic mesophases.